When you have entered all scores in a scoring form, navigate to the next scoring form by clicking on the drop-down option next to Scoring Form in the upper left corner.

Select the Scoring Form that you will evaluate. 

See Also:

Note: This will not require you to have a TeamGenius account.  You will only need to enter your Name, Email and Access Key.  You will not be able to see other evaluators scores, only the scores and comments that you enter.